My current forest and domain functional levels are 2008 R2. I know I can safely upgrade the functional levels in most cases, but I want to specifically know with regards to Lync.
Our entire environment, including Lync, is running on Windows Server 2012 R2. (We have no domain joined clients.) We are running Lync 2013 Standard with all the latest updates.
Can I safely raise the forest and domain functional levels to 2012 R2 without impacting Lync?
